Post-meal blood glucose is usually measured from the first bite of the meal. Generally after a meal, the body’s blood glucose begins to rise as carbohydrates are absorbed, and can return to premeal levels in 2 to 3 hours. The normal range of blood glucose corresponding to fasting is 3.9~6.1mmol/L, and the blood glucose value corresponding to 1 hour after meal is 6.7~9.4mmol/L, up to 11.1mmo/L; the blood glucose value of 2 hours after meal should be <7.8mmol/L. If the postprandial blood glucose level is abnormal or changes more than usual, it is recommended to consult a doctor in time to improve the relevant examination. If the abnormal blood glucose level is caused by pathological factors, please take relevant treatment under the guidance of professional doctors.